section ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

section ul li {
    display: inline-block;
    margin: 0 2% 0 0;
    width: 300px;
    text-align: center;
    vertical-align: top;
}

section ul li .round-icon {
    border: 5px solid #292929;
    border-radius: 50%;
    height: 150px;
    width: 150px;
    margin: 0 auto;
}

section ul li .round-icon img {
    height: 150px;
    width: 150px;
}

.disable-round-icon {
    border-color: darkgray !important;
}